可再生能源电解制氢宽范围运行控制策略
WIDE RANGE OPERATION CONTROL STRATEGY FOR ELECTROLYSIS HYDROGEN PRODUCTION BASED ON RENEWABLE ENERGY
夏杨红 1胡致远 1韦巍 1赵波 2章雷其2
作者信息
- 1. 浙江大学电气工程学院,杭州 310027;浙江省海洋可再生能源电气装备与系统技术研究重点实验室,杭州 310027
- 2. 国网浙江省电力公司电力科学研究院,杭州 310014
- 折叠
摘要
首先分析碱液电解制氢低载低效率的机理,发现通过重塑激励电场可有效提升系统低载效率.基于此,提出多模态自寻优(MMSO)电解制氢变流技术及其对应的变流器原理样机,并将所提控制策略应用于光伏直驱的2 Nm3/h碱液电解槽(约10 kW).发现相比于传统直流供电策略,所提策略具有以下优势:1)低载工况下,MMSO电解制氢变流控制策略最大效率提升超过两倍;2)效率≥50%约束下,系统运行范围从30%～100%扩大至10%～100%;3)碱液电解槽可全范围跟踪可再生能源出力.
Abstract
This paper analyzes the inefficiency mechanism of low-load alkaline water electrolyzers(AWEs).It is found that through modifying the excitation electric field,the low-load performance of AWEs can be greatly enhanced.Based on this,a multi-modal self-optimization(MMSO)control strategy and the corresponding prototype converter are proposed.The effectiveness of the proposed method is verified by a 2 Nm3/h AWE(about 10 kW)directly driven by PV arrays.Experimental results show that compared to the conventional DC power supply,1)the maximum efficiency improvement can exceed two times,2)under the constraint of efficiency≥50%,the system operation is enhanced from 30%-100%to 10%-100%of rated load;3)the AWE can follow the fluctuating PV power well.
关键词
可再生能源/制氢/电解槽/能量效率/波动制氢/宽范围运行Key words
renewable energy/hydrogen production/electrolytic cells/energy efficiency/fluctuating hydrogen production/wide operation range引用本文复制引用
基金项目
国家重点研发计划(2020YFB1506800)
国家电网科技项目(52110421005H)
浙江省"领雁"计划(2022C01161)
出版年
2024
NETL
NSTL
万方数据